Definition from Wiktionary, the free dictionary
forenoon (plural forenoons)
- The time period between dawn and noon; morning.
1910, Erwin Rosen, In the Legion, HTML edition, The Gutenberg Project, published 2012:
- A hot sun burned down on us. Ten times during a single forenoon every stitch of clothes on one's body was soaked with perspiration, and ten times it dried again.
the time period between dawn and noon